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Over [174]
3 years ago
7

Black holes are formed when stars lose gas to burn, form a red super giant, cool down, then becomes so dense-?

Physics
1 answer:
ruslelena [56]3 years ago
3 0

Answer:

D the star explodes

Explanation:

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At t=0, an object of mass m is at rest at x=0 on a horizontal, frictionless surface. A horizontal force Fx=F0 (1−t/T), which dec
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3 years ago
you push a book a distance of 5 meters with a force of 10 newtons for 2 seconds how much work did you do on the book
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Answer:

50 J

Explanation:

Work, W=Fd where F is the applied force and d is the distance

Substituting 10 N for F and 5 m for d then work done on the book can be expressed as

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3 0
3 years ago
A plane is flying to Minnesota with a velocity of 277.73 km/h, N. The plane
umka2103 [35]

Answer:

466 km/h

255°

measured anticlockwise from the east direction

Explanation:

find the resultant velocity of a plane after a crosswind affects its motion. take the positive

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  • <em>upx =</em> 0
  • <em>upy =  450 Km/ h</em>

<em>And for the wind.</em>

  • <em>uwx = - 120 Km/h</em>
  • <em>uwy = 0</em>

<em>The components for the r</em><em>esultant velocity </em><em>of the plane are given by</em>

  • <em>ux =upx + uwx = 0 - 120 Km/h =  </em><u><em>- 120 Km/h</em></u>
  • <em>uy = upy + uwy  = - 450 Km/h +0 = </em><u><em>- 450 Km/h</em></u>

<em>The </em><em>magnitude </em><em>of the resultant velocity is</em>

<em />\sqrt{(vx)^2+(vy)^2} =\sqrt{(-120lkm/h^2+(-450lkm/h)^2}

= 466 km/h

Hope this helps u : )

7 0
1 year ago
What happens to the kinetic energy of an object, if its velocity is doubled?
denis-greek [22]
As Kinetic Energy=half of Mass into Velocity square so as velocity is doubled the K.E of the object is doubled..
8 0
4 years ago
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In the design of an optical fibre, what
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Answer:

silica glass

Explanation:

7 0
3 years ago
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